nixos-config/modules/regreet/default.nix

{
  pkgs,
  config,
  lib,
  ...
}:
with lib;
let
  cfg = config.eboskma.regreet;

  regreetWrapperText = lib.concatStringsSep "\n" (
    (lib.optional cfg.wayvnc "${pkgs.wayvnc}/bin/wayvnc 0.0.0.0 &")
    ++ [ "${lib.getExe pkgs.greetd.regreet}" ]
  );

  regreetWrapper = pkgs.writeShellScriptBin "regreet-wrapper" regreetWrapperText;
in
{
  options.eboskma.regreet = {
    enable = mkEnableOption "regreet";
    wayvnc = mkEnableOption "wayvnc";
    wallpaper = mkOption {
      description = "Path to an image to use as wallpaper";
      type = types.path;
    };
  };

  config = mkIf cfg.enable {
    programs.regreet = {
      enable = true;
      package = regreetWrapper;
      settings = {
        background = {
          path = cfg.wallpaper;
          fit = "Cover";
        };

        GTK = {
          application_prefer_dark_theme = true;
          theme_name = "elementary";
          cursor_theme = "elementary";
          icon_theme_name = "elementary";
          font_name = "Iosevka Aile 16";
        };

        commands = {
          reboot = [
            "systemctl"
            "reboot"
          ];
          poweroff = [
            "systemctl"
            "poweroff"
          ];
        };
      };
    };
    security.pam.services.greetd.u2fAuth = false;

    networking.firewall.allowedTCPPorts = lib.mkIf (cfg.wayvnc && !config.services.tailscale.enable) [
      5900
    ];

    environment = {
      systemPackages = with pkgs; [
        pantheon.elementary-gtk-theme
        pantheon.elementary-icon-theme
      ];
    };
  };
}